124202: Ruling on using nasal sprays when fasting

There is nothing wrong with that in cases of necessity, but
if it is possible to delay it until night time then that is more on the safe
side. End quote.

Shaykh ‘Abd al-‘Azeez ibn Baaz (may Allaah have mercy on
him).

Majmoo’ Fataawa al-Shaykh Ibn Baaz
(15/264).

In a statement by the Islamic Fiqh Council it says:

The following things are not regarded as breaking the fast: …
eye drops, ear drops, having the ears syringed, nose drops, nasal sprays –
if one avoids swallowing anything that reaches the throat. End quote.